A Voltaic Cell Is Based on the Following Two Half-Reactions

A voltaic cell is based on the following two half-reactions: Ni⁺²(aq) + 2e⁻ → Ni(s) E° = −0.25 V
Cr⁺³(aq) + 3e^- → Cr(s) E° = -0.74 V
Sketch the cell and then select the correct statement about it.

A) Cr serves as the cathode.
B) The direction of electron flow through the external wire is from the Ni to the Cr electrode.
C) Anions in solution will migrate toward the Ni+2/Ni electrode.
D) The net cell reaction is 3Ni⁺²(aq) + 2Cr(s) → 3Ni(s) + 2Cr⁺³(aq)
E) = 0.99 V

Correct Answer:

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Access For Free